/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.apache.spark.h2o.ui

import org.apache.spark.SparkConf
import org.apache.spark.scheduler._
import org.apache.spark.status.{AppHistoryServerPlugin, ElementTrackingStore}
import org.apache.spark.ui.SparkUI

/**
  * History server plugin to enable Sparkling Water UI on history server
  */
class AppStatusPlugin extends AppHistoryServerPlugin {
  override def createListeners(conf: SparkConf, store: ElementTrackingStore): Seq[SparkListener] = {
    Seq(new AppStatusListener(conf, store, live = false))
  }

  override def setupUI(ui: SparkUI): Unit = {
    val sparklingWaterAppStatusStore = new AppStatusStore(ui.store.store)
    if (sparklingWaterAppStatusStore.isSparklingWaterStarted()) {
      new SparklingWaterUITab(sparklingWaterAppStatusStore, ui)
    }
  }
}
